}{
		{
			input: `<Transition>
			<Days>0</Days>
			<StorageClass>S3TIER-1</StorageClass>
		  </Transition>`,
			err: nil,
		},
		{
			input: `<Transition>
			<Days>1</Days>
			<Date>2021-01-01T00:00:00Z</Date>
			<StorageClass>S3TIER-1</StorageClass>
		  </Transition>`,
			err: errTransitionInvalid,
		},
		{
			input: `<Transition>
			<Days>1</Days>
		  </Transition>`,
			err: errXMLNotWellFormed,

)

func TestDelMarkerExpParseAndValidate(t *testing.T) {
	tests := []struct {
		xml string
		err error
	}{
		{
			xml: `<DelMarkerExpiration> <Days> 1 </Days> </DelMarkerExpiration>`,
			err: nil,
		},
		{
			xml: `<DelMarkerExpiration> <Days> -1 </Days> </DelMarkerExpiration>`,
			err: errInvalidDaysDelMarkerExpiration,
		},
	}

	for i, test := range tests {

			expectedErr: errInvalidStorageClass,
		},
		{
			// no transition rule
			xml:         []byte(`<LifecycleConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/"><Rule><ID>rule</ID><Prefix /><Status>Enabled</Status><Expiration><Days>1</Days></Expiration></Rule></LifecycleConfiguration>`),

```sh
awscli s3api put-object-lock-configuration --bucket mybucket --object-lock-configuration 'ObjectLockEnabled=\"Enabled\",Rule={DefaultRetention={Mode=\"GOVERNANCE\",Days=1}}'
```

### Set object lock

		}
	}

	lc = Lifecycle{
		Rules: []Rule{
			{
				ID:     "AllVersionsExpiration",
				Status: "Enabled",
				Filter: Filter{},
				Expiration: Expiration{
					Days: 1,
					DeleteAll: Boolean{
						val: true,
						set: true,
					},
					set: true,
				},
			},
		},
	}

	now = time.Date(2025, time.February, 12, 23, 0, 0, 0, time.UTC)

}

// TransitionDays is a type alias to unmarshal Days in Transition
type TransitionDays int

// UnmarshalXML parses number of days from Transition and validates if
// >= 0
func (tDays *TransitionDays) UnmarshalXML(d *xml.Decoder, startElement xml.StartElement) error {
	var days int
	err := d.DecodeElement(&days, &startElement)
	if err != nil {
		return err
	}

	if days < 0 {
		return errTransitionInvalidDays
	}

	errLifecycleInvalidDays         = Errorf("Days must be positive integer when used with Expiration")
	errLifecycleInvalidExpiration   = Errorf("Exactly one of Days (positive integer) or Date (positive ISO 8601 format) should be present inside Expiration.")
	errLifecycleInvalidDeleteMarker = Errorf("Delete marker cannot be specified with Days or Date in a Lifecycle Expiration Policy")

			inputXML: `<Expiration>
                                    <Days>3</Days>
                                    <Date>2019-04-20T00:00:00Z</Date>
                                    </Expiration>`,
			expectedErr: errLifecycleInvalidExpiration,
		},
		{ // Expiration with both ExpiredObjectDeleteMarker and days
			inputXML: `<Expiration>
                                    <Days>3</Days>

				<Expiration>
					<Days>365</Days>
				</Expiration>
                            <Status>Enabled</Status>
	                    </Rule>`,
			expectedErr: errXMLNotWellFormed,
		},
		{
			inputXML: `<Rule>
				<ID>Rule with a tag and DelMarkerExpiration</ID>
				<Filter><Tag><Key>k1</Key><Value>v1</Value></Tag></Filter>
				<DelMarkerExpiration>
					<Days>365</Days>
				</DelMarkerExpiration>

            This issue is stale because it has been open for 7 days with no activity.
            It will be closed if no further activity occurs. Thank you.
          close-issue-message: >
            This issue was closed because it has been inactive for 7 days since being marked as stale.
            Please reopen if you'd like to work on this further.
          days-before-pr-stale: 14
          days-before-pr-close: 14